A bicycle is rolling down a circular hill whose radius is 9.00 meters. The angular displacement of the rider entering and leaving the radius which...

A bicycle is rolling down a circular hill whose radius is 9.00 meters. The angular displacement of the rider entering and leaving the radius which joins the hill to flat terrain is 0.960 rad. The radius of each wheel is 0.400 meters. What is the angle (in radians) through which each tire rotates?